The average price of a ticket to a baseball game can be approximated by p(x) = 0.03x+ 0.54x + 8.09, where x is the number of years after 1991 and p(x) is in dollars. a) Find p(3). b) Find p( 13). c) Find p(13) - p(3). p(13) - p(3) d) Find 13-3 , and interpret this' result. a) p(3) = (Simplify your answer.)